Construction material



Patented Apr. 7, 1931 UNITED STATES PATENT OFFICE ALBERT C. FISCHER, OF CHICAGO, ILLINOIS, ASSIGNOR TO THE PHILIP CAREY MANU- FACTURING COMPANY, A. CORPORATION OF OHIO CONSTRUCTION MAT'EBIAI 1N0 Drawing.

The present application contains sub'ect matter withdrawn from my application erial No. 437,621, filed J anua 15, 1921, now Patent No. 1,550,310, dated l ugust 18, 1925.

This invention relates to the treatment of adhesive surfaces in products used in the construction field, and relates to a vehicle presenting an adhesive surface, said vehicle preferably being formed of bituminous or vegeta- 10 ble material either with or without fibrous matter pressed or rolled into sheets and having the surface thereof treated with a silicate of soda. This may be applied in the dry owdered form or by rolls coated with a silicate of soda or a silicate of soda and water'mixtiure, and after being thus coated, allowed to It is readily understood that various consistencies of silicate of soda may be purchased in commercial form and may readily be thinned out by the mixture of water. The thinning out process will determine the thickness of the applied treatment except when applied in a powdered state, at which time the degree of powder placed on the sides will determine the proportion of silicate of soda used.

If it should be desired to allow the film to set hard and dry and the surface brought back to a wet condition,'it would only be necessary to appl water as a solvent or allow the face of the ve iicle to come in contact with a mass largely composed of water.

I claim 1. Construction material comprising a bituminous vehicle presenting an adhesive surface, said adhesive surface being protected by a covering of material soluble in Water.

2. Construction material comprising a bi tuminous vehicle presenting an adhesive surface, said adhesive surface being protected by 'a film of silicate of soda.

Application filed J'u1y 30, 1825. Serial No. 47,182.

name to this specification, on this 20th day of July, A. 1)., 1925.

ALBERT so. FISCHER. 

